Troubles And Solutions - Njoy Balder Series User Manual

Troubles and solutions

7
Problem
No indication and
alarm in the front
display panel even
though the mains is
normal.
The icon and the
E.P
warning code
flash on LCD display
and alarm beeps every
second.
The icon and
flash on LCD
BATT. FAULT
display and alarm
beeps every second.
The icon
and
flash on LCD
OVER LOAD
display and alarm
beeps twice every
second.
22
Possible cause
The AC input power
is not connected
well.
EPO function is
enabled.
The external or
internal battery
is incorrectly
connected.
UPS is overload.
UPS is overloaded.
Devices connected
to the UPS are
fed directly by the
electrical network via
the Bypass.
After repetitive
overloads, the UPS is
locked in the Bypass
mode. Connected
devices are fed
directly by the mains.
Solutions
Check if input cable firmly
connected to the mains.
Set the circuit in closed
position to disable EPO
function.
Check if all batteries are
connected well.
Remove excess loads from
UPS output.
Remove excess loads from
UPS output.
Remove excess loads from
UPS output first. Then
shut down the UPS and
restart it.